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Engineering of the d-Band Center of Perovskite Cobaltite for Enhanced Electrocatalytic Oxygen Evolution

文献类型：期刊论文

作者Sun, Yiqiang3; Zhao, Zihan3; Wu, Si3; Li, Wenjuan3; Wu, Bo2; Liu, Guangning3; Chen, Guozhu3; Xu, Bo3; Kang, Baotao3; Li, Yue1
刊名CHEMSUSCHEM
出版日期2020-03-20
关键词adsorption electrocatalysis oxygen evolution perovskites doping
ISSN号1864-5631
DOI10.1002/cssc.201903470
通讯作者Kang, Baotao(chm_kangbt@ujn.edu.cn) ; Li, Yue(yueli@issp.ac.cn) ; Li, Cuncheng(chm_licc@ujn.edu.cn)
英文摘要Great efforts have been made to understand and upgrade the kinetically sluggish oxygen evolution reaction (OER). In this study, a series of V-doped LaCoO3 (V-LCO) OER electrocatalysts with optimized d-band centers are fabricated. When utilized as an electrode for the OER, as-formed LaCo0.8V0.2O3 (V-LCO-II) requires an overpotential of only 306 mV to drive a geometrical catalytic current density of 10 mA cm(-2). Furthermore, at a given overpotential of 350 mV, the OER current density of V-LCO-II is about 22 times that of pure LaCoO3 (LCO) nanoparticles. Tailoring of the d-band center by V doping facilitates the adsorption of OER intermediates and promotes the formation of amorphous active species on the surface of LCO through the exchange interaction between high-spin V4+ and low-spin Co2+. This work may create new opportunities for developing other highly active OER catalysts through d-band center engineering.
WOS关键词METAL ; VACANCIES ; LACOO3 ; OXIDES ; STATE
资助项目National Natural Science Foundation of China[51671094] ; Shandong Provincial Natural Science Foundation, China[ZR2019BEM007] ; Shandong Provincial Natural Science Foundation, China[ZR2016BM25] ; National Science Fund for Distinguished Young Scholars[51825103] ; Natural Science Foundation of China[51771188] ; Natural Science Foundation of China[51571189] ; Open Project of State Key Laboratory of Environment-Friendly Energy Materials[19kfhg08] ; Anhui Provincial Natural Science Foundation[1708085QE92] ; UJN
WOS研究方向Chemistry ; Science & Technology - Other Topics
语种英语
WOS记录号WOS:000520753200001
出版者WILEY-V C H VERLAG GMBH
资助机构National Natural Science Foundation of China ; Shandong Provincial Natural Science Foundation, China ; National Science Fund for Distinguished Young Scholars ; Natural Science Foundation of China ; Open Project of State Key Laboratory of Environment-Friendly Energy Materials ; Anhui Provincial Natural Science Foundation ; UJN
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/103551]  
专题中国科学院合肥物质科学研究院
通讯作者Kang, Baotao; Li, Yue; Li, Cuncheng
作者单位1.Chinese Acad Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Nanotechnol, Key Lab Mat Phys, Hefei 230031, Anhui, Peoples R China
2.Southwest Univ Sci & Technol, State Key Lab Environm Friendly Energy Mat, Mianyang 621010, Sichuan, Peoples R China
3.Univ Jinan, Sch Chem & Chem Engn, Jinan 250022, Shandong, Peoples R China
推荐引用方式
GB/T 7714		 Sun, Yiqiang,Zhao, Zihan,Wu, Si,et al. Engineering of the d-Band Center of Perovskite Cobaltite for Enhanced Electrocatalytic Oxygen Evolution[J]. CHEMSUSCHEM,2020.
APA Sun, Yiqiang.,Zhao, Zihan.,Wu, Si.,Li, Wenjuan.,Wu, Bo.,...&Li, Cuncheng.(2020).Engineering of the d-Band Center of Perovskite Cobaltite for Enhanced Electrocatalytic Oxygen Evolution.CHEMSUSCHEM.
MLA Sun, Yiqiang,et al."Engineering of the d-Band Center of Perovskite Cobaltite for Enhanced Electrocatalytic Oxygen Evolution".CHEMSUSCHEM (2020).

入库方式： OAI收割

来源：合肥物质科学研究院

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